\r
## Memory Format\r
\r
-+------+---+--------------+----------------------------+\r
-| 0x00 | 4 | frequency | big endian bcd |\r
-| | | | frequency 10s of Hz |\r
-+------+---+--------------+----------------------------+\r
-| 0x04 | 4 | offset | big endian bcd |\r
-| | | | frequency 10s of Hz |\r
-+------+---+--------------+----------------------------+\r
-| 0x08 | 1 | unknown1 | default 00 |\r
-+------+---+--------------+----------------------------+\r
-| 0x09 | 1 | | OR of tx power and split |\r
-| | | tx power | tx power high : 00001000 |\r
-| | | | tx power med : 00000100 |\r
-| | | and | tx power low : 00000000 |\r
-| | | | |\r
-| | | split | split +ve : 00000001 |\r
-| | | | split -ve : 00000010 |\r
-| | | flags1 | no split : 00000000 |\r
-| | | | |\r
-| | | | talk around: 0x80 |\r
-| | | | scramble : 0x40 |\r
-+------+---+--------------+----------------------------+\r
-| 0x0a | 1 | chan spacing | bit: |\r
-| | | | 7 - |\r
-| | | and | 6 |\r
-| | | | 5 |\r
-| | | params | 4 |\r
-| | | | 3 - channel width 3,2 |\r
-| | | flags 2 | 2 - 10=25kHz,01=20kHz, |\r
-| | | | 00=12.5kHz | \r
-| | | | 1 - reverse |\r
-| | | | 0 - tx off |\r
-+------+---+--------------+----------------------------+\r
-| 0x0b | 1 | ctcss enable | bit: |\r
-| | | | 3 - dcs dec enable |\r
-| | | | 2 - ctcss dec enable |\r
-| | | flags3 | 1 - dcs enc enable |\r
-| | | | 0 - ctcss enc enable |\r
-+------+---+--------------+----------------------------+\r
-| 0x0c | 1 |ctcss dec tone| ctcss enumeration |\r
-+------+---+--------------+----------------------------+\r
-| 0x0d | 1 |ctcss enc tone| ctcss enumeration |\r
-+------+---+--------------+----------------------------+\r
-| 0x0e | 1 | dcs dec code | =int(tone, 8) bits 7:0 |\r
-+------+---+--------------+----------------------------+\r
-| 0x0f | 1 | unknown3 | default 0x00 |\r
-| | | | 1 - DCS dec invert en |\r
-| | | | 0 - DCS dec code bit 8 |\r
-+------+---+--------------+----------------------------+\r
-| 0x10 | 1 | dcs enc code | =int(tone, 8) bits 7:0 |\r
-+------+---+--------------+----------------------------+\r
-| 0x11 | 1 | unknown5 | default 0x00 |\r
-| | | | 1 - DCS enc invert en |\r
-| | | | 0 - DCS enc code bit 8 |\r
-+------+---+--------------+----------------------------+\r
-| 0x12 | 1 | params | bit |\r
-| | | | 1,0 - busy chn lockout |\r
-| | | | 10 = 'busy' |\r
-| | | flags4 | 01 = 'repeater' |\r
-| | | | 00 = 'off' |\r
-+------+---+--------------+----------------------------+\r
-| 0x13 | 1 | unknown6 | default 0x00 |\r
-+------+---+--------------+----------------------------+\r
-| 0x14 | 1 | params | bit |\r
-| | | flags5 | 0 - ctcss squelch enable |\r
-+------+---+--------------+----------------------------+\r
-| 0x15 | 1 | unknown7 | default 0x00 |\r
-+------+---+--------------+----------------------------+\r
-| 0x16 | 1 | unknown8 | default 0x00 |\r
-+------+---+--------------+----------------------------+\r
-| 0x17 | 1 | unknown9 | default 0x00 |\r
-+------+---+--------------+----------------------------+\r
-| 0x18 | 1 | unknown10 | default 0x00 |\r
-+------+---+--------------+----------------------------+\r
-| 0x19 | 5 | name string | |\r
-+------+---+--------------+----------------------------+\r
-| 0x1e | 1 | custom ctcss | custom ctcss value as |\r
-| | | low byte | Hz * 10, litte endian |\r
-+------+---+--------------+ e.g. 0xae08 = 222.2Hz |\r
-| 0x1f | 1 | custom ctcss | see 'define' value in |\r
-| | | high byte | ctcss enumeration |\r
-| | | | |\r
-+------+---+--------------+----------------------------+\r
+ +------+---+--------------+----------------------------+\r
+ | 0x00 | 4 | frequency | big endian bcd |\r
+ | | | | frequency 10s of Hz |\r
+ +------+---+--------------+----------------------------+\r
+ | 0x04 | 4 | offset | big endian bcd |\r
+ | | | | frequency 10s of Hz |\r
+ +------+---+--------------+----------------------------+\r
+ | 0x08 | 1 | unknown1 | default 00 |\r
+ +------+---+--------------+----------------------------+\r
+ | 0x09 | 1 | | OR of tx power and split |\r
+ | | | tx power | tx power high : 00001000 |\r
+ | | | | tx power med : 00000100 |\r
+ | | | and | tx power low : 00000000 |\r
+ | | | | |\r
+ | | | split | split +ve : 00000001 |\r
+ | | | | split -ve : 00000010 |\r
+ | | | flags1 | no split : 00000000 |\r
+ | | | | |\r
+ | | | | talk around: 0x80 |\r
+ | | | | scramble : 0x40 |\r
+ +------+---+--------------+----------------------------+\r
+ | 0x0a | 1 | chan spacing | bit: |\r
+ | | | | 7 - |\r
+ | | | and | 6 |\r
+ | | | | 5 |\r
+ | | | params | 4 |\r
+ | | | | 3 - channel width 3,2 |\r
+ | | | flags 2 | 2 - 10=25kHz,01=20kHz, |\r
+ | | | | 00=12.5kHz | \r
+ | | | | 1 - reverse |\r
+ | | | | 0 - tx off |\r
+ +------+---+--------------+----------------------------+\r
+ | 0x0b | 1 | ctcss enable | bit: |\r
+ | | | | 3 - dcs dec enable |\r
+ | | | | 2 - ctcss dec enable |\r
+ | | | flags3 | 1 - dcs enc enable |\r
+ | | | | 0 - ctcss enc enable |\r
+ +------+---+--------------+----------------------------+\r
+ | 0x0c | 1 |ctcss dec tone| ctcss enumeration |\r
+ +------+---+--------------+----------------------------+\r
+ | 0x0d | 1 |ctcss enc tone| ctcss enumeration |\r
+ +------+---+--------------+----------------------------+\r
+ | 0x0e | 1 | dcs dec code | =int(tone, 8) bits 7:0 |\r
+ +------+---+--------------+----------------------------+\r
+ | 0x0f | 1 | unknown3 | default 0x00 |\r
+ | | | | 1 - DCS dec invert en |\r
+ | | | | 0 - DCS dec code bit 8 |\r
+ +------+---+--------------+----------------------------+\r
+ | 0x10 | 1 | dcs enc code | =int(tone, 8) bits 7:0 |\r
+ +------+---+--------------+----------------------------+\r
+ | 0x11 | 1 | unknown5 | default 0x00 |\r
+ | | | | 1 - DCS enc invert en |\r
+ | | | | 0 - DCS enc code bit 8 |\r
+ +------+---+--------------+----------------------------+\r
+ | 0x12 | 1 | params | bit |\r
+ | | | | 1,0 - busy chn lockout |\r
+ | | | | 10 = 'busy' |\r
+ | | | flags4 | 01 = 'repeater' |\r
+ | | | | 00 = 'off' |\r
+ +------+---+--------------+----------------------------+\r
+ | 0x13 | 1 | unknown6 | default 0x00 |\r
+ +------+---+--------------+----------------------------+\r
+ | 0x14 | 1 | params | bit |\r
+ | | | flags5 | 0 - ctcss squelch enable |\r
+ +------+---+--------------+----------------------------+\r
+ | 0x15 | 1 | unknown7 | default 0x00 |\r
+ +------+---+--------------+----------------------------+\r
+ | 0x16 | 1 | unknown8 | default 0x00 |\r
+ +------+---+--------------+----------------------------+\r
+ | 0x17 | 1 | unknown9 | default 0x00 |\r
+ +------+---+--------------+----------------------------+\r
+ | 0x18 | 1 | unknown10 | default 0x00 |\r
+ +------+---+--------------+----------------------------+\r
+ | 0x19 | 5 | name string | |\r
+ +------+---+--------------+----------------------------+\r
+ | 0x1e | 1 | custom ctcss | custom ctcss value as |\r
+ | | | low byte | Hz * 10, litte endian |\r
+ +------+---+--------------+ e.g. 0xae08 = 222.2Hz |\r
+ | 0x1f | 1 | custom ctcss | see 'define' value in |\r
+ | | | high byte | ctcss enumeration |\r
+ | | | | |\r
+ +------+---+--------------+----------------------------+\r
\r
## ctcss enumeration:\r
-+------+-----------++------+------------++------+-----------++------+------------+\r
-| Val | Tone [Hz] || Val | Tone [Hz] || Val | Tone [Hz] || Val | Tone [Hz] |\r
-+------+-----------++------+------------++------+-----------++------+------------+\r
-| 0x00 | 62.5 || 0x0d | 100.0 || 0x1a | 156.7 || 0x27 | 196.6 |\r
-| 0x01 | 67.0 || 0x0e | 103.5 || 0x1b | 159.8 || 0x28 | 199.5 |\r
-| 0x02 | 69.3 || 0x0f | 107.2 || 0x1c | 162.2 || 0x29 | 203.5 |\r
-| 0x03 | 71.9 || 0x10 | 110.9 || 0x1d | 165.5 || 0x2a | 206.5 |\r
-| 0x04 | 74.4 || 0x11 | 114.8 || 0x1e | 167.9 || 0x2b | 210.7 |\r
-| 0x05 | 77.0 || 0x12 | 118.8 || 0x1f | 171.3 || 0x2c | 218.1 |\r
-| 0x06 | 79.7 || 0x13 | 123.0 || 0x20 | 173.8 || 0x2d | 225.7 |\r
-| 0x07 | 82.5 || 0x14 | 127.3 || 0x21 | 177.3 || 0x2e | 229.1 |\r
-| 0x08 | 85.4 || 0x15 | 131.8 || 0x22 | 179.9 || 0x2f | 233.6 |\r
-| 0x09 | 88.5 || 0x16 | 136.5 || 0x23 | 183.5 || 0x30 | 241.8 |\r
-| 0x0a | 91.5 || 0x17 | 141.3 || 0x24 | 186.2 || 0x31 | 250.3 |\r
-| 0x0b | 94.8 || 0x18 | 146.2 || 0x25 | 189.9 || 0x32 | 254.1 |\r
-| 0x0c | 97.4 || 0x19 | 151.4 || 0x26 | 192.8 || 0x33 | define |\r
-+------+-----------++------+------------++------+-----------++------+------------+\r
+\r
+ +------+-----------++------+------------++------+-----------++------+------------+\r
+ | Val | Tone [Hz] || Val | Tone [Hz] || Val | Tone [Hz] || Val | Tone [Hz] |\r
+ +------+-----------++------+------------++------+-----------++------+------------+\r
+ | 0x00 | 62.5 || 0x0d | 100.0 || 0x1a | 156.7 || 0x27 | 196.6 |\r
+ | 0x01 | 67.0 || 0x0e | 103.5 || 0x1b | 159.8 || 0x28 | 199.5 |\r
+ | 0x02 | 69.3 || 0x0f | 107.2 || 0x1c | 162.2 || 0x29 | 203.5 |\r
+ | 0x03 | 71.9 || 0x10 | 110.9 || 0x1d | 165.5 || 0x2a | 206.5 |\r
+ | 0x04 | 74.4 || 0x11 | 114.8 || 0x1e | 167.9 || 0x2b | 210.7 |\r
+ | 0x05 | 77.0 || 0x12 | 118.8 || 0x1f | 171.3 || 0x2c | 218.1 |\r
+ | 0x06 | 79.7 || 0x13 | 123.0 || 0x20 | 173.8 || 0x2d | 225.7 |\r
+ | 0x07 | 82.5 || 0x14 | 127.3 || 0x21 | 177.3 || 0x2e | 229.1 |\r
+ | 0x08 | 85.4 || 0x15 | 131.8 || 0x22 | 179.9 || 0x2f | 233.6 |\r
+ | 0x09 | 88.5 || 0x16 | 136.5 || 0x23 | 183.5 || 0x30 | 241.8 |\r
+ | 0x0a | 91.5 || 0x17 | 141.3 || 0x24 | 186.2 || 0x31 | 250.3 |\r
+ | 0x0b | 94.8 || 0x18 | 146.2 || 0x25 | 189.9 || 0x32 | 254.1 |\r
+ | 0x0c | 97.4 || 0x19 | 151.4 || 0x26 | 192.8 || 0x33 | define |\r
+ +------+-----------++------+------------++------+-----------++------+------------+\r
\r
## Checksum\r
+\r
```python\r
def checksum(message_bytes):\r
mask = 0xFF\r
checksum = (checksum + b) & mask\r
return checksum\r
```\r
+\r
+\r
vim: set ft=markdown :\r
projects / wikirepo / blobdiff